{"type": {"key": "/type/work"}, "title": "Calculus", "subjects": ["Calculus", "Mathematical analysis"], "authors": [{"type": {"key": "/type/author_role"}, "author": {"key": "/authors/OL276354A"}}], "key": "/works/OL29040887W", "latest_revision": 2, "revision": 2, "created": {"type": "/type/datetime", "value": "2022-10-18T02:40:43.776792"}, "last_modified": {"type": "/type/datetime", "value": "2022-12-29T22:57:18.183883"}}